Improvement of ICRF Antenna Loading in the Minimum-B Configuration on GAMMA 10

Takuro YOKOYAMA; Makoto ICHIMURA; Ryuya IKEZOE; Yumeto UGAJIN; Toru IWAI; Tatsunori SATO; Takuma IIMURA; Yu-ki SAITO; Mafumi HIRATA; Yuusuke YAMAGUCHI; Atsushi FUKUYAMA; Tsuyoshi IMAI

doi:10.1585/pfr.7.2402136

Regular Articles

Improvement of ICRF Antenna Loading in the Minimum-B Configuration on GAMMA 10

Takuro YOKOYAMA, Makoto ICHIMURA, Ryuya IKEZOE, Yumeto UGAJIN, Toru IWAI, Tatsunori SATO, Takuma IIMURA, Yu-ki SAITO, Mafumi HIRATA, Yuusuke YAMAGUCHI, Atsushi FUKUYAMA, Tsuyoshi IMAI

Author information

Takuro YOKOYAMA
Plasma Research Center, University of Tsukuba
Makoto ICHIMURA
Plasma Research Center, University of Tsukuba
Ryuya IKEZOE
Plasma Research Center, University of Tsukuba
Yumeto UGAJIN
Plasma Research Center, University of Tsukuba
Toru IWAI
Plasma Research Center, University of Tsukuba
Tatsunori SATO
Plasma Research Center, University of Tsukuba
Takuma IIMURA
Plasma Research Center, University of Tsukuba
Yu-ki SAITO
Plasma Research Center, University of Tsukuba
Mafumi HIRATA
Plasma Research Center, University of Tsukuba
Yuusuke YAMAGUCHI
Research Center for Development of Far-Infrared Region, University of Fukui
Atsushi FUKUYAMA
Department of Nuclear Engineering, Graduate School of Engineering, Kyoto University
Tsuyoshi IMAI
Plasma Research Center, University of Tsukuba

Keywords: GAMMA10, ICRF heating, minimum-B field, ICRF antenna, wave transmission

JOURNAL FREE ACCESS

2012 Volume 7 Pages 2402136

DOI https://doi.org/10.1585/pfr.7.2402136

Details

Abstract

On GAMMA10, waves in Ion-Cyclotron Range of Frequency (ICRF) are used to produce initial plasmas, heat plasmas and keep magneto-hydrodynamic (MHD) stability. High performance plasmas in the minimum-B configuration supply MHD stability. In order to enhance plasma heating, we introduce an ICRF system for heating plasmas in the anchor cell and evaluate its antenna loading. Changing the antenna shape is expected to improve antenna loading. In the experiment, we confirm to increase the antenna loading by changing the antenna shape from simple bar-type to the double elliptic arc type.

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